Stretcher produced after basic dental works (7,4)
I believe the answer is:
elastic band
'stretcher' is the definition.
(I've seen this before)
'after basic dental works' is the wordplay.
'after' means one lot of letters go next to another.
'works' indicates an anagram (work can mean to twist or convulse).
'basic' next to 'dental' is 'basicdental'.
'basicdental' anagrammed gives 'ELASTIC BAND'.
'produced' is the link.
(Other definitions for elastic band that I've seen before include "Loop of thin rubber" , "Loopy item" , "the papers may be gripped by?" , "Stretcher" , "Rubber ring" .)